The Gut
The body’s largest environmental interface
The gut determines what enters the bloodstream and how the immune system responds.
Key roles:
• microbiome balance
• nutrient absorption
• intestinal barrier integrity
• immune regulation
• neurotransmitter production
Important fact:
Nearly 70–80% of immune activity is connected to the gut environment.
When gut function declines:
dysbiosis develops
inflammation increases
nutrient deficiencies appear
immune signaling becomes dysregulated